Metric Mechanic Engine Heads

4 Cylinder - M10

2002, 320i, 318i ≥’85
ItemPriceCore Deposit
Head: HiFlo ST Sport$2,295$300
Head Gasket: 94mm Big Bore$140
Pistons: 92mm Rally, Hard Anodized 9.75:0 CR$1,100
Rings: 92mm Moly$160
Rods: “H” Beam 143mm, 4 Oiling Grooves$780
Rod Bearing Set, Coated Tri-Metal$180
Main Bearing Set, Coated$225

6 Cylinder - M30

3.0cs, Bavaria, 5, 6, & 7 Series ≥’93
ItemPriceCore Deposit
Head, HiFlo ST Sport$2,695$500
Head Gasket, 95mm Bore$240
Pistons: 95mm Rally, Hard Anodized 10.25:1 CR$1,650
Rings: 95mm Moly$240
Rods: “H” Beam, 143mm, 4 Oiling Grooves$1,170
Rod Bearing Set, Coated Tri-Metal$270
Main Bearings, Coated$315

Baby Six - M20

325i/e, 528e, 525i ≥’91
ItemPriceCore Deposit
Sport Head$2,495$500
Rally Head$2,695$500
Stock Head$1,995$500

M3 - S14

M3 ’88-’91
ItemPriceCore Deposit
2400 Rally Engine - 255 HP
Head* HiFlo Rally, 31mm Intake Ports
Rally Camshaft$750$300
Cam Box Clearanced for Race Cam$$150
Adjusting Shim Pads$600
Head Gasket$140
Piston, 95 mm, Hard Anodized 11.5:1 CR$1,100
Rings, Moly 95mm$160
Rods, “H” Beam, 144mm, 4 Oiling Grooves$780
Rod Bearing, Coated Tri-Metal$180
Main Bearing Set, Coated$225
Cornering Baffle$50
Ported Intake Manifold$600
EVO Intake Gaskets$220
Top End Gasket Set$100
Bottom End Gasket Set$150
Motorsport Front and Rear Crank Seal$80

M5 & M6 - S38 / S88

M5 & M6 ’85-’93
ItemPriceCore Deposit
Sport Head, 29.5mm Ports$2,995Core*
- Options: Adjusting Shim Pads$500
Rally Head (31mm Ports)$3,295Core*
- Options: Rally Camshaft$1,000$500
- Options: Clearance Cam Box for Rally Cam$200
- Options: Adjusting Shim Pads$500
- Options: Ported Intake Manifolds$900
Stock Head$2,295Core*
- Options: Adjusting Shim Pads$500

M42 & M44 Engines

M42: (E30 ‘90-’91), (E36 ‘92-’95), (Z3 ‘95), M44: (E36/5 318ti ‘96-’98), (E36 318i ‘96-’98), (Z3 ‘96-’98)
ItemPriceCore Deposit
Sport or Rally Head, M42$1,795$750
Head Upgrade, from 7mm to 6mm Valvetrain$350
Rally Head (31mm Ports)$1,995$750


ItemPriceCore Deposit
Sport or Rally Head$2795$1,000
Includes 6% Flow Increase,
Surface Turbulence Valves,
Manganese Valve Guides,
MM “Bee HIve” Valve Springs & Lightweight Retainers
Stock Head$2,195
Stock Head: cleaned, glass beaded, 3 angle valve job,
reconditioned valves, manganese bronze valve guides, “Bee Hive” valve springs, & retainers